220004120100 has 144 divisors (see below), whose sum is σ = 674838918656. Its totient is φ = 55240704000.

The previous prime is 220004120099. The next prime is 220004120111. The reversal of 220004120100 is 1021400022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24420 + ... + 663780.

Almost surely, 2^220004120100 is an apocalyptic number.

220004120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220004120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337419459328).

220004120100 is an abundant number, since it is smaller than the sum of its proper divisors (454834798556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220004120100 is a wasteful number, since it uses less digits than its factorization.

220004120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639446 (or 639439 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 220004120100 its reverse (1021400022), we get a palindrome (221025520122).

The spelling of 220004120100 in words is "two hundred twenty billion, four million, one hundred twenty thousand, one hundred".